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Kengo's blog

Technical articles about original projects, JVM, Static Analysis and JavaScript.

プチコン用ミュージックプレイヤー

'MUSIC PLAYER

CLS:CLEAR:SPCLR
M=0:P=-1:MMAX=29
BGMSTOP
GOSUB @DRAW

@MAIN
  GOSUB @CHK
  VSYNC 8
GOTO @MAIN

@CHK
  B=BUTTON()
  IF B AND 1 THEN M=M+1
  IF B AND 2 THEN M=M-1
  IF B AND 4 THEN M=RND(MMAX+1)
  IF M<0 THEN M=MMAX
  IF MMAX<M THEN M=0
  IF B AND 24 THEN GOSUB @PLAYM
  IF B AND 32 THEN GOSUB @STOPM
  IF B AND 63 THEN GOSUB @DRAWM
RETURN

@PLAYM
  BGMPLAY M
  P-M
RETURN

@STOPM
  BGMSTOP
  P=-1
RETURN

@DRAW
  CLS:COLOR 0
  ?"PETIT MUSIC PLAYER♪"
  ?"-------------------"
  ?"PUSH ↑↓ TO SELECT"
  ?"PUSH ← TO TEKITOU"
  ?"PUSH A→ TO PLAY"
  ?"PUSH B TO STOP"
  ?"          ...ENJOY!"
  ?"-------------------"
  ?"NEXT MUSIC IS No.";M
  IF P>=0 THEN ?"PLAYING MUSIC No.";P
RETURN